Microcosm Aquarium Explorer is a world-class online resource devoted to the underwater worlds that are home to fishes, corals, aquatic plants and invertebrate life of special interest to aquarium keepers. The mission of Microcosm Aquarium Explorer is to inspire and inform those with an interest in the natural world, with particular emphasis on tropical coral reef and rainforest aquatic ecosystems that are the models for aquarists creating captive microcosms in their home aquaria.